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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: Clin Perinatol. 2017 Mar 22;44(2):287–303. doi: 10.1016/j.clp.2017.01.009

Figure 1. Survival from 1993 through 2015 following Live Birth in the NICHD Neonatal Research Network.

Figure 1

Includes all participating centers. Liveborn infants were included regardless of whether active treatment was initiated. Whisker bars indicate 95% confidence intervals calculated with the Clopper-Pearson method.

Data Stoll BJ, Hansen NI, Bell EF, et al. Trends in care practices, morbidity, and mortality of extremely preterm neonates, 1993–2012. JAMA. 2015;314(10):1039–1051 for 1993–2012 and courtesy of the NICHD Neonatal Research Network for 2013–2015.